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Finding the Fourth Proportional to 450,116.00, 620,867.45 and 288,715.40

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Solution

The fourth proportional to 450,116.00, 620,867.45 and 288,715.40 is: 398,239.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,116.00 : 620,867.45 = 288,715.40 : x
  2. Step 2: Convert to fraction form
    450,116.00/620,867.45 = 288,715.40/x
  3. Step 3: Cross multiply
    450,116.00x = 620,867.45 × 288,715.40
  4. Step 4: Simplify right side
    450,116.00x = 179,253,989,625.82
  5. Step 5: Solve for x
    x = 179,253,989,625.82/450,116.00
  6. Step 6: Final answer
    x = 398,239.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.